Explosion protection valve for decoupling system parts or workpieces, comprising a sealing ring

Abstract

An explosion protection valve for decoupling system parts or workpieces for the installation in a pipeline, comprising a housing, a closing body which is axially guided inside the housing on a guide rod and can be shifted from a defined open position into a sealing closed position in the event of a pressure or suction wave in the pipeline in at least one closing movement direction, a spring assembly, which is in operative connection to the closing body, on the guide rod for holding the closing body in the open position, a sealing ring on the inner side of the housing, against which the closing body can be pressed in its closed position, and a receiving pocket, which is applied to the inner side of the housing and is preferably open counter to the closing movement direction (SB) of the closing body, for holding the sealing ring.

The invention claimed is: 
     
       1. An explosion protection valve for decoupling one of the group comprising system parts and workpieces for the installation in a pipeline, the explosion protection valve comprising:
 a housing; 
 a closing body which is axially guided inside the housing on a guide rod and can be shifted from a defined open position into a sealing closed position in the event of one of the group comprising a pressure wave and a suction wave in the pipeline in at least one closing movement direction; 
 a spring assembly, which is in operative connection to the closing body, on the guide rod for holding the closing body in the open position; 
 a sealing ring on an inner side of the housing, against which the closing body can be pressed in its closed position, an open receiving pocket applied to the inner side of the housing for holding the sealing ring, wherein the receiving pocket is delimited on a radially inwardly facing side thereof by a tubular housing portion of the housing, wherein a sealing portion of the sealing ring, at its radially inwardly pointing rim thereof, merges smoothly into the tubular housing portion of the housing, wherein the sealing portion of the sealing ring, interacting with the closing body in the closed position of the valve, is arranged outside and against the closing movement direction in front of the receiving pocket, wherein the sealing portion of the sealing ring adjoins the inner side of the housing at its radially outwardly pointing rim in a circumferential sealing lip, wherein an inner contour of the sealing ring merges towards the radially outwardly pointing rim into the circumferential sealing lip. 
 
     
     
       2. An explosion protection valve according to  claim 1 , wherein the receiving pocket is open counter to the closing movement direction of the closing body. 
     
     
       3. An explosion protection valve according to  claim 1 , wherein the sealing ring is inserted into the receiving pocket by means of an anchoring portion, the cross sectional shape of which is essentially flat-rectangular with an insertion length which is greater by at least one third than a radial thickness of the anchoring portion. 
     
     
       4. An explosion protection valve according to  claim 3 , wherein the anchoring portion of the sealing ring is provided with anchoring projections acting counter to the insertion direction. 
     
     
       5. An explosion protection valve according to  claim 1 , further comprising one of the group comprising a form-fitting connection and an adhesive connection for fixing the sealing ring in the receiving pocket. 
     
     
       6. An explosion protection valve according to  claim 1 , wherein the inner contour of the sealing ring, which can be contacted by the medium flowing through the valve, is configured spherically. 
     
     
       7. The explosion protection valve according to  claim 6 , wherein the spherical inner contour of the sealing ring is configured to be approximately quarter-circular. 
     
     
       8. An explosion protection valve according to  claim 1 , wherein the sealing ring is formed as a hollow chamber profile with a circumferential hollow chamber. 
     
     
       9. An explosion protection valve according to  claim 1 , wherein a hollow chamber extends exclusively in the region of the sealing portion. 
     
     
       10. An explosion protection valve according to  claim 1 , wherein a seamless transition is provided between the housing and the sealing ring. 
     
     
       11. An explosion protection valve according to  claim 1 , wherein a flow contact side of the housing and a flow contact side of the sealing ring are free of internal corners or undercuts. 
     
     
       12. An explosion protection valve according to  claim 1 , wherein the sealing portion does not engage in a free flow cross-section of the housing. 
     
     
       13. An explosion protection valve according to  claim 1 , wherein a portion of the inner contour of the sealing ring is even with an inner surface of the tubular housing portion of the housing, wherein no edges or undercuts are formed where the sealing portion merges with the housing. 
     
     
       14. An explosion protection valve for decoupling one of system parts and workpieces for installation in a pipeline, the explosion protection valve comprising:
 a housing comprising a first housing portion and a second housing portion, the first housing portion and the second housing portion defining a sealing ring receiving opening, the first housing portion comprising a first housing portion surface facing in an axial direction of the housing with respect to a longitudinal axis of the housing, the first housing portion further comprising a first housing portion inner surface, the second housing portion comprising a second housing portion inner surface; 
 a closing body axially guided inside the housing on a guide rod, the closing body being configured to move from a defined open position into a sealing closed position based on one of a pressure wave and a suction wave in the pipeline in at least one closing movement direction; 
 a spring assembly connected to the closing body, the spring assembly extending about the guide rod for holding the closing body in the open position; 
 a sealing ring comprising a radially outwardly facing rim comprising a circumferential sealing lip, a radially inwardly facing rim, and a sealing ring inner surface extending from the radially outwardly facing rim to the radially inwardly facing rim, the radially outwardly facing rim engaging the second housing portion inner surface, the radially inwardly facing rim engaging the first housing portion surface, wherein a portion of the sealing ring inner surface and a portion of the first housing portion inner surface are in a same plane, at least a portion of the sealing ring being arranged in the sealing ring receiving opening. 
 
     
     
       15. An explosion protection valve according to  claim 14 , wherein the sealing ring inner surface defines an inner contour of the sealing ring, the inner contour extending towards the radially outwardly pointing rim into the circumferential sealing lip. 
     
     
       16. An explosion protection valve according to  claim 14 , wherein a seamless transition is provided in an area in which the first housing portion contacts the sealing ring. 
     
     
       17. An explosion protection valve according to  claim 14 , wherein a flow contact side of the housing and a flow contact side of the sealing ring are free of internal corners or undercuts. 
     
     
       18. An explosion protection valve according to  claim 14 , wherein the sealing ring comprises an anchoring portion having a flat-rectangular cross sectional shape, the anchoring portion comprising an insertion length that is greater by at least one third than a radial thickness of the anchoring portion. 
     
     
       19. An explosion protection valve according to  claim 14 , further comprising one of the group comprising a form-fitting connection and an adhesive connection for fixing the sealing ring in the sealing ring receiving opening. 
     
     
       20. An explosion protection valve according to  claim 14 , wherein an inner contour of the sealing ring, which can be contacted by the medium flowing through the valve, is configured spherically.